Well birds of prey, cats, dogs, most carnivores would love a little mongoose. Of Course they're famous for their ability to fight and kill cobra, but they are definitely still on the menu for poisonous and constricting snakes as well.
Some birds like hawks,mongoose also eat snake, weird.
I think snakes and animals that are as fast as the mongoose to catch the mongoose, but really I don't know!
Just moved to Oahu, and I have a mongoose that thinks its okay to come in the house at night and steal fruit off the dining room table.